package Exercise2.exercise2;
import java.util.*;
public class Letter {
	public static void main(String[] arge) {
		Scanner in=new Scanner(System.in);
		while(true) {
			System.out.println("请输入大写字母");
			String a=in.next();
			System.out.println("小写字母为："+a.toLowerCase());
			System.out.println("是否继续，继续请输入yes");
			String flag=in.next();
			if(flag.equals("yes")) {
				continue;
			}
			break;
		}
	}
}
